'Exposed: Ireland's Secret Cults!' takes a close look at a number of cults operating right here in Ireland.

The first of these cults is Christiana Gallagher's House of Prayer in Achill Co. Mayo. We go undercover to examine the source of her seemingly lavish life style and look at the credibility of some of her "God given" predictions about the future of the world, as well as those running 'The House of Prayer' in her name.

Also exposed in the documentary is perhaps the most famous cult of all, 'Scientology'! We look at their methods of extracting money from new recruits and how they manage to keep members loyal to the cult. We also speak to ex members who have worked within 'Scientology' itself and find out what attracts the likes of Tom Cruise to join such a cult!

Finally, we expose perhaps the most mysterious of them all the 'Palmarians'. 'Palmarians' originate in Spain but attract a large number of followers here in Ireland! We look at the cult's wealth and very strict rule set that can separate children from their parents.